Assistant suitable for high-salt system microemulsion

The invention belongs to the field of agricultural surfactants, and discloses a pesticide microemulsion aid, which belongs to the field of agricultural surfactants, can be applied to high-salt system microemulsions, particularly to high-salt system microemulsions containing glyphosate isopropylamine salt or glufosinate-ammonium, and can solve the problem of crystal precipitation in the high-salt system microemulsions and remarkably improve the cloud point of the microemulsions. And the effective components in the auxiliary agent also have a certain synergistic effect on glyphosate and glufosinate-ammonium. The auxiliary agent provided by the invention is mainly composed of the following components in percentage by mass: 50-80% of betaine ampholytic surfactant and 20-50% of phosphate esterification emulsifier, wherein the betaine ampholytic surfactant accounts for 50-80% of the auxiliary agent, and the phosphate esterification emulsifier accounts for 20-50% of the auxiliary agent. 公开一种农药微乳剂助剂，属于农用表面活性剂领域，该助剂可以